Apparatus for engraving.



No. 810,990; PATENTED JAN. 30, 1906. J. P. STEVENS.

APPARATUS FOR ENGRAVING.

' APPLIGATION FILED JULY 28, 1903.

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No. 810,990. PATBNTED JAN. 30, 1906. J. P. STEVENS.

APPARATUS FOR ENGRAVING.

APPLICATION mum JULY 2a, 1903.

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attomww s NITED STATES PATENT. OFFICE.

APPARATUS FOR ENGRAVING.

Specification of Letters Patent.

Patented Jan. 30, 1906.

Application filed July 28, 1903- Serial No. 167,319.

To all whom it may concern.-

Be it known that I, JOSIAH PERCY STEVENS, a citizen of the United States, residing at Atlanta, in the county of Fulton and State of Georgia, have invented certain new and useful Improvements in Apparatus for Engraving; and I do hereby declare thefollowing to speed.

My present invention is intended especially for use in connection with the engraving-machine described in my application, Serial N 0. 48,800, filed February 25, 1901.

My invention will be more clearly understood by reference to the accompanying drawings, in which the same parts are indicated by the same letters throughout the several views.

Figure 1 is a perspective view showing the improved type-holder with apparatus for facilitating the operation of engraving. Fig. 2 is an enlarged front view showing the shading apparatus. Fig. 3 is a plan View of the device shown in Fig. 2. Figs. 4 and 4 are details on a still larger scale, showing the feed devices for the shading mechanism in diiferent position; and Fig. 5 is a perspective view showing one of the type used in the apparatus. 1

A (see Fig. 1) represents a frame, preferably of metal, having uprights A and curved supporting-arms A On the uprights A is secured the upper board B, to which is attached the lower board B by means of the screws C, which screws have butterfly-nuts, so that the drop of the board B away from the board B may be adjusted at will. It is only desirable to have this board B drop away from the board B far enough to permit the insertion of the lip (2 (see Fig. 5) ofthe type, which lip is clamped between boards B and B by means of the cams D, or they may be clamped together in any other convenient way. The type E, 'E, and E is suitably spaced,

preferably bythe eye, in front of the lower clamping-board B and are then clamped in place by means of the cams D.

F represents a tracerbar which carries a tracer-point f, telescopically mounted therein, as described in my application hereinbefore referred to. The opposite end of this bar Fcarries the graving-tool. The tracer f may be provided with a prong f for convenience in manipulation. The lines drawn by this tracer from the type at one end of the machine are reproduced on a smaller scale on the plate by the graving-tool at the other end of the machine, as fully described in my application aforesaid.

G represents a bar, which is adjustably mounted on the frame A by means of the slotted arms G and the clamping-screws g, which bar serves as a support for the elbow of the operator, who is seated on a bench (not shown) in front of the type-holder and moves along this bench, steadying his elbow on this bar G. The bar WV is also provided as a handrest for the other hand of the operator and stretches across the curved arms A I also provide another bar I, which extends along the top of the board B and is fixed thereto at its two ends, as indicated in dotted lines I in Fig. 1. Along this bar travels the block H, carrying guide-plate K, for use in shading. This guide-plate has a downwardlyprojecting arm K with a straight edge 70, which edge serves as the guide for the tracer-tool. The arm K passes on one side of the boards B and B, and the plate H projects down behind the board B, so that the block H may not tilt over backward. In order to secure equidistancc between the lines of the shading, I provide the feed device shown in detail in Figs. 2, 4, and i. It will be seen that the rod I passes through eyes it, h, and k fast to the block I-I. Between the eyes it and if I provide a coilspring M and a sliding collar N,'consistingofthumb-lug a and a perforated base a.

Q represents an adjustable stop screwed into the nut R fast to the block H, which may be adjusted by means of the knurled head Q. Near the forward end of the block H, 1 provide a check against backlash, which consists of a spring 0 and a collar P, sliding on the rod I and pivoted to the block H. The block H, and with it the guide-plate K, are fed forward in a series of equal steps by means of the feed apparatus, as will now be described. Suppose the parts to be in the position shown in Figs. 2 and 3 and the operator push the lug n to the left, at the same time pushing on the knurl-head Q or any part of the block H to the right. This will cause the sliding collar N to bite into the fixed rod I and the block H will bemoved until the end of the screw Q strikes the sliding collar N, the position being shown in Fig. 4*. Further movement of the block will now cease, and if the lug n be released the spring M will slide the sliding collar forward again, restoring the parts to the initial position, (shown in Fig. 2,) when the operation may be repeated indefinitely.

To prevent backlash or the slipping back of the block H by any accident, I provide the spring 0 and pivoted collar P, as before described. This collar P allows the block H to slip forward along the rod I when the collar N is released; but if any attempt is made to slide the block H backward the collar P will bite into the rod I under the influence of the spring O. When it is desired to slide the block back on the bar I, press the outer end of the collar P toward the eye it, compressing the spring, and the shading device may be slid readily backward, as will be requisite at finishing each line of Work.

It will be seen that the screw Q may be screwed in or out of the nut R, and thus regulate the length of the step through which the block H travels, and in this Way fine or coarse shading may be obtained, as may be desired.

The tracer-tool f is shown raised clear of the type in Fig. 1 for the sake of clearness in the drawings.

In the operation of the machine the attendant rests his right elbow on the rod G and with his right hand guides the graving-tool f. He rests his left wrist on the bar H and manipulates the lug n with his thumb, while pressing the end of the block H with one or more of the fingers. In practice he first shades all of the letters on any given line of the plate, following of bourse the type on the type-holder, but not attempting to follow any shade-lines on the type. Then, havingshaded all of the letters on the plate, he temporarily discards the shading device and follows the outline of the letters on the type, reproducing the same on the plate at the other end of p the machine.

said type-holder and provided with a guidearm projecting in front of the type, a tracerrod and a tracer-tool carried thereby, an elbow-bar adjustably connected to said frame to facilitate the guidance of the tracer-rod, and a hand-rest mounted near the type-holder to facilitate the operation of the shading device, substantially as described.

2. In an apparatus for engraving, the combination with a frame, a type-holder mounted on said frame, a shading device mounted on said type-holder and provided with a guidearm projecting in front of the type, means for imparting a step-by-step motion to said shading device, a tracer-rod and a tracer-tool carried thereby, an elbow-bar adjustably connected to said frame to facilitate the guidance of the tracer-rod, and a hand-rest mounted near the type-holder to facilitate the operation of the shading device, substantially as described.

8. In an apparatus for engraving, the combination with a frame, a type-holder mounted on said frame and comprising two boards, with means for clamping the edge of the one against the edge'of the other, a shading device traveling along said type-holder and provided with a guide-arm projecting in front of the type, a tracer-rod and a tracer-tool carried thereby, an elbow-bar adjustably connected to said frame to facilitate the guidance of the tracer-rod, and a hand-rest mounted near the type-holder to facilitate the operation of the shading device, substantially as described.

4. In an apparatus for engraving, the combination with aTframe, a type-holder mounted on said frame and com prising two boards, with means for clamping the edge of the one against the edge of the other, a shading device traveling along said type-holder and provided with a guide-arm projecting in front of the type, means for impartinga step-by-step motion to said shading device, a tracer-rod and a tracertool carried thereby, an elbow-bar adj ustably connected to said frame to facilitate the guidance of the tracer-rod, and a hand-rest mounted near the type-holder to facilitate the operation of the shading device, substantially as described.

5. In an apparatus for engraving, the combination with a frame, a typeholder mounted on said frame, and a shading device traveling along said type-holder and provided with a guide-arm projecting in front of the type, of an elbow-bar adjustably connected to said frame, and a wrist-bar mounted above and in front of the type-holder, substantially as described.

6. In an apparatus for engraving, the combination with a frame, a type-holder mounted on said frame, a shading device mounted on said type-holder and provided with a guidearm projecting in front of the type, and means for imparting a step-by step motion to said shading device, an elbow-bar adjustably connected to said frame, and a Wrist-bar mounted above and in front of the type-holder, substantially as described.

7. In an apparatus for engraving, the combination with a frame, a type-holderrnounted on said frame and comprising twoboards, and means for clamping the edge of the one against the edge of the other, of a shading device traveling along said type-holder and provided with a guide-arm projecting in front of the type, an elbowbar adjustably connected to said frame, and a wrist-bar mounted above and in front of the type-holder, substantially as described.

8. In an apparatus for engraving, the c0mbination with a frame, a type-holder mounted on said frame and comprising two boards, with means for clamping the edge of the one against the edge of the other, a shading device traveling along said type-holder, and provided with a guide-arm projecting in front of the type, and means for imparting a step-by-step motion to said shading device, of an elbow-bar adjustably connected to said frame, and a Wrist-bar mounted above and in front of the type-holder, substantially as described.

In testimony whereof I afiix mysignature in presence of two witnesses.

JOSIAH PERCY STEVENS. Witnesses:

WM. J. MILLs, J. M. MARKLEY. 

